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A 1974 postage stamp encouraging people to use the ZIP Code on letters and parcels. A ZIP Code (an acronym for Zone Improvement Plan [1]) is a system of postal codes used by the United States Postal Service (USPS).
There are generally two widely accepted versions of a postal code: a ZIP code and a ZIP + 4 code. Established in 1963, ZIP codes are the most common and recognizable postal code used by the USPS.
The FCC assigned additional numeric codes used with the EAS for territorial waters of the U.S., but these were not part of the FIPS standard. The FIPS state alpha code for each U.S. states and the District of Columbia are identical to the postal abbreviations by the United States Postal Service. From September 3, 1987, the same was true of the ...
NNNNN for PO Boxes. NNNNN-NNNN for home delivery. A complete 13-digit code has 5-digit number representing region, sector, city, and zone; 4-digit X between 2000 and 5999; 4-digit Y between 6000 and 9999. [23] Digits of 5-digit code may represent postal region, sector, branch, section, and block respectively. [24] Senegal: SN: NNNNN
ISO 3166-2:US is the entry for the United States in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
Your billing zip code, or credit card postal code, is the five-digit number on the bottom right, which in this sample is 90210. This would be the zip code associated with your billing address.
In order to receive the appropriate barcode discount, the delivery point digits and the +4 extension must be verified using an up-to-date, CASS or Delivery Point Validation (DPV) certified program. Since each city block or section of a rural route has a different +4 extension, and address numbers generally increase by 100 per block, the ...
If the address is valid, it is assigned a ZIP+4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range. An address with a ZIP+4 code (or nine-digit ZIP code) is considered to be valid. In most cases, this means that the address is deliverable.